Fasten your seat belts. The Subway Series express streaks off tonight for Yankee Stadium and Game 1 between the city’s biggest sports rivals.

The Bombers and the Amazin’s split the six-game series last year – with each team winning two of three in its own ballpark.

Met and Yankee fans are already sounding battle cries over which team will reign supreme.

At the Yankee Clubhouse Shop on East 59th Street, pinstripe loyalists said their beloved Bombers are going to derail the Mets.

“It’s going to be an intense battle, but the Yankees are going to sweep the series because we’re the world champions,” said diehard fan Andy Clar.

“We’re going to destroy the Mets. The Yanks own this city. The Mets don’t stand a chance against us,” said the 33-year-old Manhattan freight supervisor.

Warren Simonson, 38, a shipping manager from Queens, had no borough loyalty. “The Yankees are going to kill the Mets,” he said.

“We own the Mets. We’re the champs. We always find a way to win. I am so pumped up,” he said. “It’s going to be electric at the Stadium.”

Sister Francis Wystepek, a no nun-sense Bomber backer who will be watching the games with her Met-fan friend Sister Kathleen Maciej, said the Amazin’s don’t have a prayer.

“We’re going to beat the Mets bad,” said Wystepek.

“The Yankees are going to win all three games. There’s no way we can lose. The Mets have a good team, but not like the Yankees.”

But Met fans insisted it’s going to be an Amazin’ weekend.

“This is our year,” said Joey Torres, 33, sporting a tattoo on his left arm of a muscle-bound Mr. Met stomping on a Yankee cap.

“The Yankees have had their run and now it’s time for the Mets to be the city’s team. We’re going to cream the Yankees. We’ve got the better pitching,” Torres said at the Mets Clubhouse Shop on East 54th Street.

Bob Niebling, clad in Mets orange and blue, said the Amazin’s are going to bop the Bombers.

“I’m sick and tired of the Yankees and I want to beat them real bad,” said the Queens postal worker.

“I hate the Yankees and I especially hate their fans. The Mets are going to take two of three this weekend.”

Brad Small, 30, a Manhattan financial adviser, agreed: “We’re going to slam the Yankees. It’s going to be crazy at Yankee Stadium, but the Mets are the better team.”